Millions of Americans suffer from asthma. This is an important yet inexpensive device that can make a difference in the control of your asthma. Daily measuring how quickly you can expel air from your lungs can help you and your doctor manage your asthma.

Accurate and durable meter made of impact resistant plastic. Daily record chart and average flow chart are included. Standard range unit is 60-880 and low range is 10-380. 1 yr warranty.